#pragma once

#include "query_utils.h"

#include "query.h"
#include "working_files.h"

#include <optional.h>

optional<QueryLocation> GetDefinitionSpellingOfSymbol(QueryDatabase* db,
                                                      const QueryTypeId& id);
optional<QueryLocation> GetDefinitionSpellingOfSymbol(QueryDatabase* db,
                                                      const QueryFuncId& id);
optional<QueryLocation> GetDefinitionSpellingOfSymbol(QueryDatabase* db,
                                                      const QueryVarId& id);
optional<QueryLocation> GetDefinitionSpellingOfSymbol(QueryDatabase* db,
                                                      const SymbolIdx& symbol);
optional<QueryLocation> GetDefinitionExtentOfSymbol(QueryDatabase* db,
                                                    const SymbolIdx& symbol);
optional<QueryFileId> GetDeclarationFileForSymbol(QueryDatabase* db,
                                                  const SymbolIdx& symbol);
std::vector<QueryLocation> ToQueryLocation(
    QueryDatabase* db,
    const std::vector<QueryFuncRef>& refs);
std::vector<QueryLocation> ToQueryLocation(
    QueryDatabase* db,
    const std::vector<QueryTypeId>& refs);
std::vector<QueryLocation> ToQueryLocation(QueryDatabase* db,
                                           std::vector<WithGen<QueryFuncId>>*);
std::vector<QueryLocation> ToQueryLocation(QueryDatabase* db,
                                           std::vector<WithGen<QueryTypeId>>*);
std::vector<QueryLocation> ToQueryLocation(QueryDatabase* db,
                                           std::vector<WithGen<QueryVarId>>*);
std::vector<QueryLocation> ToQueryLocation(QueryDatabase* db,
                                           const std::vector<QueryFuncId>& ids);
std::vector<QueryLocation> GetUsesOfSymbol(QueryDatabase* db,
                                           const SymbolIdx& symbol,
                                           bool include_decl);
std::vector<QueryLocation> GetDeclarationsOfSymbolForGotoDefinition(
    QueryDatabase* db,
    const SymbolIdx& symbol);

bool HasCallersOnSelfOrBaseOrDerived(QueryDatabase* db, QueryFunc& root);
std::vector<QueryFuncRef> GetCallersForAllBaseFunctions(QueryDatabase* db,
                                                        QueryFunc& root);
std::vector<QueryFuncRef> GetCallersForAllDerivedFunctions(QueryDatabase* db,
                                                           QueryFunc& root);
optional<lsPosition> GetLsPosition(WorkingFile* working_file,
                                   const Position& position);
optional<lsRange> GetLsRange(WorkingFile* working_file, const Range& location);
lsDocumentUri GetLsDocumentUri(QueryDatabase* db,
                               QueryFileId file_id,
                               std::string* path);
lsDocumentUri GetLsDocumentUri(QueryDatabase* db, QueryFileId file_id);
optional<lsLocation> GetLsLocation(QueryDatabase* db,
                                   WorkingFiles* working_files,
                                   const QueryLocation& location);
std::vector<lsLocation> GetLsLocations(
    QueryDatabase* db,
    WorkingFiles* working_files,
    const std::vector<QueryLocation>& locations);
// Returns a symbol. The symbol will have *NOT* have a location assigned.
optional<lsSymbolInformation> GetSymbolInfo(QueryDatabase* db,
                                            WorkingFiles* working_files,
                                            SymbolIdx symbol,
                                            bool use_short_name);

std::vector<SymbolRef> FindSymbolsAtLocation(WorkingFile* working_file,
                                             QueryFile* file,
                                             lsPosition position);

void EmitDiagnostics(WorkingFiles* working_files,
                     std::string path,
                     std::vector<lsDiagnostic> diagnostics);

template <typename Q, typename Fn>
void EachWithGen(std::vector<Q>& collection, WithGen<Id<Q>> x, Fn fn) {
  Q& obj = collection[x.value.id];
  // FIXME Deprecate optional<Def> def
  //  if (obj.gen == x.gen && obj.def)
  if (obj.def)
    fn(obj);
}

template <typename Q, typename Fn>
void EachWithGen(std::vector<Q>& collection, std::vector<WithGen<Id<Q>>>& ids, Fn fn) {
  size_t j = 0;
  for (WithGen<Id<Q>> x : ids) {
    Q& obj = collection[x.value.id];
    if (1 /*obj.gen == x.gen*/) {
      if (obj.def) // FIXME Deprecate optional<Def> def
        fn(obj);
      ids[j++] = x;
    }
  }
  ids.resize(j);
}